| Queensland Railways A12 class | |
| Powertype: | Steam |
| Builder: | Baldwin Locomotive Works (18) Evans, Anderson, Phelan & Co (25) |
| Builddate: | 1882-1891 |
| Totalproduction: | 43 |
| Whytetype: | 4-4-0 |
| Fueltype: | Coal |
| Cylindercount: | 2 outside |
| Cylindersize: | 12x |
| Operator: | Queensland Railways |
| Disposition: | all scrapped |
The Queensland Railways A12 class locomotive was a class of 4-4-0 steam locomotives operated by the Queensland Railways.
Between 1882 and 1895, the Queensland Railways took delivery of 43 4-4-0 locomotives built by Baldwin Locomotive Works (18) and Evans, Anderson, Phelan & Co (25). Per Queensland Railway's classification system they were designated the A12 class, A representing they had two driving axles, and the 12 the cylinder diameter in inches.[1] An American built A12 class locomotive No.62 boiler exploded at Roma Street, Brisbane on 2 December 1898. The Court of Enquiry into the explosion was recorded in the 1899 Votes and Proceedings of the Queensland Legislative Assembly.[2]